B-11
OPERATION
SETTINGS WHEN USING THE K930-2 TIG MODULE
• Set the WELD MODE switch to the TOUCH START TIG setting.
• Set the RUN / STOP / IDLE switch to the AUTO IDLE / RUN
position.
• Set the WELDING TERMINALS switch to the REMOTELY
CONTROLLED position. This will keep the solid state contactor
open and provide a “cold” electrode until the triggering
device (amptrol or arc start switch) is pressed.
Table B.2 TYPICAL CURRENT RANGES
(1)
FOR TUNGSTEN ELECTRODES
(2)
DCEN (-)
DCEP (+)
Approximate Argon Gas Flow Rate
L/min (cfm)
Tungsten
Electrode
1%, 2%
1%, 2%
TIG TORCH
Diameter
Thoriated
Thoriated
Aluminum
Stainless Steel
Nozzle
mm (in)
Tungsten
Tungsten
Size
(4) (5)
.25 (0.010)
2-15
(3)
2-4 (3-8)
2-4 (3-8)
#4, #5, #6
.50 (0.020)
5-20
(3)
3-5 (5-10)
3-5 (5-10)
1.0 (0.040)
15-80
(3)
3-5 (5-10)
3-5 (5-10)
1.6 (1/16)
70-150
10-20
3-5 (5-10)
4-6 (9-13)
#5, #6
2.4 (3/32)
150-250
15-30
6-8 (13-17)
5-7 (11-15)
#6, #7, #8
3.2 (1/8)
250-400
25-40
7-11 (15-23)
5-7 (11-15)
4.0 (5/32)
400-500
40-55
10-12 (21-25)
6-8 (13-17)
#8, #10
4.8 (3/16)
500-750
55-80
11-13 (23-27)
8-10 (18-22)
6.4 (1/4)
750-1000
80-125
13-15 (28-32)
11-13 (23-27)
(1)
When used with argon gas. The current ranges shown must be reduced when using argon/helium or pure helium shielding gases.
(2)
Tungsten electrodes are classified as follows by the American Welding Society (AWS):
Pure
EWP
1% Thoriated
EWTh-1
2% Thoriated
EWTh-2
Though not yet recognized by the AWS, Ceriated Tungsten is now widely accepted as a substitute for 2% Thoriated Tungsten in
AC and DC applications.
(3)
DCEP is not commonly used in these sizes.
(4)
TIG torch nozzle “sizes” are in multiples of 1/16ths of an inch:
# 4 = 1/4 in.
6 mm
# 5 = 5/16 in.
8 mm
# 6 = 3/8 in.
10 mm
# 7 = 7/16 in.
11 mm
# 8 = 1/2 in.
12.5 mm
#10 = 5/8 in.
16 mm
(5)
TIG torch nozzles are typically made from alumina ceramic. Special applications may require lava nozzles, which are less prone to
breakage, but cannot withstand high temperatures and high duty cycles.
VANTAGE
®
441X
/LE500X
